KR101489949B1 - Fixing zig for gundrill - Google Patents

Abstract

The present invention relates to a fixing jig for a gun handle, comprising: a base plate (10); A driving motor (20) provided at a middle portion of the base plate (10) in the width direction; The workpiece is fixed on the interlocking chucks 31 symmetrically provided on both sides of the driving motor 20 in the longitudinal direction at both sides in the longitudinal direction, A pair of work fixing parts (30) arranged to rotate the interlocking chucks (31) in a direction opposite to a direction of the work fixing parts (30); And a power transmitting portion (40) for simultaneously transmitting the driving force from the driving motor (20) to the work fixing portions (30) on both sides. The material is fixed by a pair of interlocking chucks 31 provided at the front and rear sides of the respective material fixing parts, thereby preventing the material from shaking during machining, And that the machining reliability is greatly improved by machining.

Description

Fixing zig for gundrill}

More particularly, the present invention relates to a fixing jig for guards, which can simultaneously process two materials while simultaneously rotating the material in the direction opposite to the tool with the tool, thereby further shortening the processing time, The present invention relates to a fixing jig for a gun drill.

In general, gundrill is a tool used for deep drilling of workpieces and is mainly used for relatively small diameter hole machining.

Although the material to be processed by the gun drill is usually used for machining a diameter of 4 to 25 mm, it is used for machining of 50 mm or less, but most is used for machining of 25 mm or less.

During the material processing using the gun drill, the material is usually fixed to the V-shaped block to be machined. Normally, one tool is machined for one tool.

As an application example of a V-shaped block for fixing a workpiece, there are many other than Japanese Laid-Open Patent Application No. 1999-0035543 (May 15, 1999), but the jig is provided in a structure for fixing workpieces by using a vise or the like .

However, when the materials are processed one by one, the productivity is lowered and the processing cost is increased. In addition, when the length of the material is longer than a certain length, there is a problem that the tolerance between the machining dimension on the tip end side and the machining dimension on the rear end side is severely generated.

Korean Patent Laid-Open No. 1999-0035543 (May 15, 1999)

SUMMARY OF THE INVENTION It is an object of the present invention to provide a fixing jig for a gun drill which is capable of simultaneously processing two materials by two tools to increase productivity.

Another object of the present invention is to provide a fixing jig for use with a gun, which can improve the reliability of processing by allowing both sides of the material to be fixed at the same time so that the processing degree of the relatively long material can be uniformly and accurately performed.

In order to accomplish the above object, according to the present invention, there is provided a fixing jig for a gun drill comprising: a base plate; A driving motor provided at one side of the base plate in the width direction; The workpiece is fixed to the interlocking chucks symmetrically provided at the front and rear sides of the workpiece, the workpiece being spaced a predetermined distance in the longitudinal direction from both sides of the driving motor, A pair of material fixtures configured to rotate the interlocking chucks; And a power transmitting portion for simultaneously transmitting the driving force from the driving motor to the work fixing portions on both sides.

The work fixing unit is configured such that the front and rear interlocking chucks are rotatably connected together by a tubular rotary shaft, and the rotary shaft is rotatably supported by a bracket for fixing a lower end of the rotary shaft to the base plate, The driving force is transmitted through the power transmitting portion to rotate.

The material fixing unit may be configured such that the front and rear interlocking chucks are connected to each other by a tubular rotary shaft so as to be rotatable at the same time while the rotary shafts are formed to have different diameters and are connected by dovetail coupling in the axial direction, The rotation shaft of the diameter is rotatably supported by the fixed bracket and the movable bracket, and the movable bracket on one side is fixed so as to be movable in the axial direction along the rail formed on the base plate, And a power transmitting portion to which a driving force is transmitted from the driving motor is connected to a rotating shaft which is pivotally supported by the fixing bracket on the other side.

The power transmission unit is connected to a driving shaft drawn from the driving motor and a scoop or a timing gear which is axially fixed on the same vertical line of each rotary shaft as a chain or a timing belt.

Meanwhile, the driving motor controls the driving speed in accordance with the rotational speed of the processing tool.

With the fixing jig for a gun according to the present invention, two materials can be simultaneously processed through the material fixing portions on both sides, thereby improving the productivity of the process, and enabling processing of even longer materials.

In addition, according to the present invention, a material is fixed by a pair of interlocking chucks provided at front and rear sides of each material fixing part, thereby preventing shaking of the material during processing, and accurate machining can be performed, thereby greatly improving machining reliability.

1 is a perspective view illustrating an embodiment of a fixing jig for a gun drill according to the present invention;
2 is a plan view illustrating an embodiment of a fixing jig for a gun drill according to the present invention.
3 is a structural view illustrating a power transmitting portion of a fixing jig for a grooming according to the present invention.
4 is a perspective view illustrating another embodiment of the fixing jig for a gun drill according to the present invention.
5 is a plan view illustrating another embodiment of the fixing jig for a gun drill according to the present invention.
FIG. 6 is a cross-sectional view of a waist portion showing a combined structure of a material fixing portion according to another embodiment of the fixing jig for a gown of the present invention
7 is an exploded perspective view showing a coupling structure between rotary shafts in a material fixing portion according to another embodiment of the fixing jig for a grooming according to the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of a fixing jig for a gully according to the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a perspective view illustrating an embodiment of a fixing jig for a grooming according to the present invention, and FIG. 2 is a plan view illustrating an embodiment of a fixing jig for a grooming according to the present invention.

As shown in the drawing, the present invention mainly includes a base plate 10, a drive motor 20, a work fixing portion 30, and a power transmission portion 40.

The base plate 10 of the present invention is a flat plate structure having a predetermined area, and is configured to be fixedly mounted on a facility in which a processing tool is installed.

Since the present invention is not installed only in a specific facility, it is more preferable that the base plate 10 has a solution structure such as a bolt hole to facilitate installation and separation in various facilities.

The driving motor 20 is provided at one side of the base plate 10 and is firmly coupled at the middle in the width direction.

It is most preferable that the drive motor 20 is provided on the side opposite to the position where the tool is formed so that a driving force is generated in a direction opposite to the rotational direction of the tool.

The work fixing portion 30 of the present invention is provided to fix a work to be machined.

The material fixture 30 mainly includes a linking chuck 31, a rotating shaft 32, and a bracket 33.

Therefore, it is preferable that the work fixing unit 30 is located on the same horizontal line as the processing tool, and the work fixing unit 30 in the present invention is arranged in the width direction of the base plate 10 with respect to the driving motor 20 It is one of the features of the present invention.

That is, the material fixing portions 30 of the present invention are provided on both sides of the driving motor 20 as shown in FIG. 2, so that two workpieces can be fixed at the same time.

The material fixing unit 30 is configured again as the interlocking chuck 31, the rotary shaft 32, and the bracket 33.

In the material fixing unit 30, the interlocking chucks 31 are longitudinally formed so as to be symmetrical with respect to each other at a distance from the front side and the rear side, and the front side interlocking chuck 310 and the rear interlocking chuck 311 have a constant diameter And are connected so as to be rotatable equally by a rotary shaft 32 formed in a tubular shape.

In other words, the rotary shaft 32 is formed in a tubular shape so as to have a larger inner diameter than the material insertion holes formed in the interlocking chuck 31, and the interlocking chuck 31 is coupled to both ends of the rotary shaft 32 symmetrically with each other .

The brackets 33 are configured such that the both rotary shafts 32 of the both-side work fixing portions 30 are rotatably supported while the lower end portions are fixedly coupled to the base plate 10.

The rotating shaft 32 is pivotally supported through the bracket 33 and connected to the bracket 33 by a bearing (not shown) so that the rotating shaft 32 is rotatably supported by the bracket 33.

At this time, the bracket 33 may be configured so as to support the rotary shafts 32 on both sides at the same time, or may be configured to support the rotary shafts 32 respectively.

3 is a structural view illustrating a power transmitting portion of a fixing jig for a gully according to the present invention. In the power transmitting portion 40 of the present invention, the driving force from the driving motor 20 is transmitted to the rotating shaft 32 on both sides The power transmitting portion 40 is provided with a sprocket 41 which is axially fixed to the rotary shaft 32 provided on the driving shaft 21 of the driving motor 20 and the material fixing portion 30 on both sides And the timing gears are connected to the chain 42 or the timing belt.

It is more preferable that the power transmitting portion 40 is protected from the outside by a cover 43 whose one side is fixed to the bracket 33.

FIG. 4 is a perspective view illustrating another embodiment of the fixing jig for a grooming according to the present invention, and FIG. 5 is a plan view illustrating another embodiment of the fixing jig for a grooming according to the present invention.

As shown in the drawings, the interlocking chuck 31 provided forward or rearward in the fixed jig for guards according to the present invention may be provided so as to be movable in the longitudinal direction from the base plate 10.

That is, one of the front or rear interlocking chucks 31 is fixed to the base plate 10 while the other is movable in the longitudinal direction. To this end, the base plate 10 is provided with the rails 11 ).

FIG. 6 is a cross-sectional side view of a recessed portion showing a coupling structure of a material fixing portion according to another embodiment of the fixing jig for a grooming according to the present invention.

As shown in the drawing, the rotary shaft 32 integrally connecting the front and rear interlocking chucks 31 is divided into two different diameters so that the rotary shaft 321 having a small diameter is formed inside the rotary shaft 320 having a large diameter And the portions to be mutually engaged are connected to each other by a dovetail coupling between mutually facing main surfaces as shown in FIG. 7, so that they can be moved in the axial direction while being rotated at the same time.

A fixed bracket 34 is connected to the rotary shaft 32 of one of the rotary shafts 32 having different diameters so that the rotary shaft 32 is rotatable while the sprocket 41 or the timing gear of the power transmission unit 40 is axially coupled And the fixing bracket 34 is fixed to the base plate 10 at the lower end thereof.

And the movable bracket 35 is connected to the rotary shaft 32 of the other side so that the lower bracket 35 can be moved in the longitudinal direction to the rail 11, .

The movable bracket 35 is coupled to the rotating shaft 32 and fixed to the rail 11 while being movable in a longitudinal direction.

On the other hand, the moving bracket 35 allows the moving distance to be manually adjusted, and may be automatically adjusted using a separate power source.

In particular, in each of the embodiments of the present invention, it is more preferable that the driving speed of the driving motor 20 is adjusted in accordance with the rotational speed of the processing tool.

A process of hole processing using the fixing jig for a gun according to the present invention will now be described.

The fixing jig for a gun drill according to the present invention is mainly applied to a gun drill, but it is also applicable to various facilities such as a CNC and the like.

Therefore, the fixing jig of the present invention is provided with the fastening holes 12 for facilitating the coupling with the respective equipments on the base plate 10, so that the fastening jig can be easily attached and detached to various facilities.

8, a workpiece 50 having a predetermined length is coupled to the fixing jig of the present invention, and the two working chucks 31 are inserted through the interlocking chuck 31 on one side of the interlocking chucks 31 on both sides, Respectively.

If the length of the workpiece 50 to be machined is short in a state where the distance between the linking chucks 31 on both sides is fixed as in the embodiment of the present invention, The working material 50 is fixed to one of the interlocking chucks 31 and the dummy material 51 is fixed to the other interlocking chuck 31 by connecting the dummy material 51 to be engaged with one end of the interlocking chuck 31, So as to be firmly fixed on the interlocking chucks 31 on both sides.

In contrast, in the case where one of the brackets 35 is movable as in the other embodiments of the present invention, the moving bracket 35 is appropriately moved according to the length of the material 50 to be processed, So that the workpiece 50 can be securely fixed over the chuck 31.

When both sides of the workpiece 50 are fixed to the interlocking chucks 31 on both sides, holes are machined from one end of the workpiece 50 using a tool such as a gun.

The interlocking chuck 31 rotates at 30 to 40 RPM per minute. However, the interlocking chuck 31 is driven by the driving motor 20 and the power transmitting part 40 To rotate in the opposite direction to the machining tool.

When the machining tool is moved at a speed of 30 to 50 mm per minute while processing at such a speed, not only the material can be machined at a higher speed, but also the rear end is prevented from being rocked even by a long material, So that machining can be performed.

In addition, since the material to be machined can be machined simultaneously using two machining tools, the machining productivity can be improved correspondingly, so that the machining operation time can be shortened and the manufacturing cost can be reduced.

On the other hand, even if the material to be processed is difficult to be machined at one time, if the opposite side is turned, an excellent workability in which a step on the machined interface is hardly generated is exhibited.

Particularly, the present invention is advantageous in that it can be more suitably applied to the processing of a material which requires more precise machining because of its thin thickness.

10: base plate 11: rail
20: Driving motor 30:
31: interlocking chuck 32: rotating shaft
33: Bracket 34: Fixed bracket
35: moving bracket 40: power transmitting portion
50: Working material

Claims (5)

A base plate;
A driving motor provided at one side of the base plate in the width direction;
The interlocking chucks, which are provided on both sides in the width direction on the basis of the driving motor and are capable of fixing the workpiece by a predetermined distance in the longitudinal direction from the front side and the rear side, A pair of material fixation parts which are rotatably connected to each other by a rotation shaft of a shape and are configured to rotate in a direction opposite to a rotation direction of the processing tool;
A power transmission part for simultaneously transmitting driving force from the driving motor to the work fixing parts on both sides and rotating the same in the same direction;
And the fixing jig. The method according to claim 1,
And a tubular rotary shaft rotatably connected between the front and rear interlocking chucks of the work fixing unit is rotatably supported by a bracket fixed to the base plate so that a lower end thereof is fixed.
A base plate;
A driving motor provided at one side of the base plate in the width direction;
The rotation shafts are connected to each other by the dovetail coupling in the axial direction so that the rotation shafts are made to have different diameters while the front and rear interlocking chucks are simultaneously rotatably connected by the tubular rotary shaft, Is rotatably supported by the fixed bracket and the movable bracket, and the movable bracket on one side is axially movably fixed along the rail formed on the base plate, so that the distance between the front and rear interlocking chucks A material fixture to enable adjustment;
A power transmission unit for simultaneously transmitting a driving force from the driving motor to the rotating shaft which is supported by the fixed bracket at the material fixing unit on both sides;
And the fixing jig.
The method according to claim 1 or 3,
Wherein the power transmitting portion is connected to a driving shaft drawn from the driving motor and a scoop or a timing gear which is fixed on the same vertical line of each rotary shaft as a chain or a timing belt.
The method according to claim 1 or 3,
Wherein the driving motor adjusts the driving speed in accordance with the rotation speed of the processing tool.

Images